Abstract: A toothbrush for periodontal care, comprises: a grip for holding; a head, set on the front of the grip, extending forward from the front of the grip for a predetermined length and having a predetermined width, wherein the bottom surface of the head has many bristles; it is characterized in that: the predetermined length of the head is slightly shorter than the total length of any two adjacent teeth, and the predetermined width almost equals the width of the lower first molar, thereby easy horizontal brushing and straight picking are achieved.

Abstract: A vibrative anesthesia device for pain reducing comprises: a grip, for hand gripping; an electrical component, set inside of the grip with a protruding cable; a vibration component, electrically connected with the electrical component for setting in the oral cavity; thereby, with vibration generated by the vibration component, pain reducing or painless feeling are archieved.